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authorAbhishek Kulkarni <adkulkar@umail.iu.edu>2009-09-23 13:00:27 -0500
committerEric Van Hensbergen <ericvh@strongmad.austin.ibm.com>2009-09-23 13:03:46 -0500
commit60e78d2c993e58d890596d951fff77d5965adcd6 (patch)
tree3d53ed7254c613ef8d8de36fdceda25bc493f4f7 /include/net/9p/9p.h
parent637d020a02cd734bf27acfc56c6d942cddd9eb80 (diff)
downloadop-kernel-dev-60e78d2c993e58d890596d951fff77d5965adcd6.zip
op-kernel-dev-60e78d2c993e58d890596d951fff77d5965adcd6.tar.gz
9p: Add fscache support to 9p
This patch adds a persistent, read-only caching facility for 9p clients using the FS-Cache caching backend. When the fscache facility is enabled, each inode is associated with a corresponding vcookie which is an index into the FS-Cache indexing tree. The FS-Cache indexing tree is indexed at 3 levels: - session object associated with each mount. - inode/vcookie - actual data (pages) A cache tag is chosen randomly for each session. These tags can be read off /sys/fs/9p/caches and can be passed as a mount-time parameter to re-attach to the specified caching session. Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'include/net/9p/9p.h')
-rw-r--r--include/net/9p/9p.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index b77c147..a7fb548 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -38,6 +38,8 @@
* @P9_DEBUG_SLABS: memory management tracing
* @P9_DEBUG_FCALL: verbose dump of protocol messages
* @P9_DEBUG_FID: fid allocation/deallocation tracking
+ * @P9_DEBUG_PKT: packet marshalling/unmarshalling
+ * @P9_DEBUG_FSC: FS-cache tracing
*
* These flags are passed at mount time to turn on various levels of
* verbosity and tracing which will be output to the system logs.
@@ -54,6 +56,7 @@ enum p9_debug_flags {
P9_DEBUG_FCALL = (1<<8),
P9_DEBUG_FID = (1<<9),
P9_DEBUG_PKT = (1<<10),
+ P9_DEBUG_FSC = (1<<11),
};
#ifdef CONFIG_NET_9P_DEBUG
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